# 常规字段长度定义
LEN_SHORT = 32
LEN_NORMAL = 64
LEN_MIDDLE = 128
LEN_LONG = 255
LEN_X_LONG = 1000
LEN_XX_LONG = 10000
LEN_XXX_LONG = 20000

# 字段默认值
EMPTY_INT = 0
EMPTY_STRING = ""